ETSI TR 126 989-2017 长期演进技术(LTE);关键任务一键通(MCPTT);媒体、编解码器和多媒体广播/多播服务(MBMS)用于LTE上的MCPTT的增强(V14.0.0;3GPP TR 26.989 版本14.0.0 发行版本14)
LTE; Mission Critical Push To Talk (MCPTT); Media@ codecs and Multimedia Broadcast/Multicast Service (MBMS) enhancements for MCPTT over LTE (V14.0.0; 3GPP TR 26.989 version 14.0.0 Release 14)